WritePrivateProfileString

can the WritePrivateProfileString API used to store numbers (integers) ???

Well sort of. You can store the numbers, but they will be considered as strings. It is very easy in VB to use those strings as numbers back in your app.

If you get back numbers you can use Val(number), CInt(Number) or CLng(Number) to convert it from a string to what ever type of number that you need.